flag
1. verb, slang To arrest someone. The police will flag all of us if they catch us drinking—we are underage, you know. After trying to flag these guys for months, we were finally able to bring them into the station tonight. A: "I heard the police flagged Tom last night." B: "Yikes, what did he do?"
2. verb, slang To fail something. You better study hard, or you'll flag this exam. You better use your turn signal, or you'll flag your driver's test. Aw man, how am I going to tell my parents that I flagged my science test?
3. noun, slang The grade of F on something. You better study hard or you'll get a flag on this exam. Keep in mind that I will give a flag to anyone who doesn't complete this assignment. I didn't do last night's reading, that's how I got a flag on the pop quiz.
4. noun, slang A bandana worn to show one's gang affiliation. What color flag is that kid wearing? If you're gonna be with us, kid, you need a blue flag. I got beat up for wearing an orange flag in another gang's territory.
flag down
To wave one's arms to attract someone's attention, usually to get them to stop moving. A noun or pronoun can be used between "flag" and "down." I was finally able to flag down a passing motorist to help with our stalled car. It'll take a while to flag a taxi down. Why don't we just walk to the museum? Luckily, I was able to flag down a police officer right after I saw the car and bicycle collide.
flag up
To mark or highlight someone or something for the attention of others. A noun or pronoun can be used between "flag" and "up." The council was right to flag up these inconsistencies in the administration's report. Something in my Internet search history must have flagged me up to the authorities. Sir, the auditors flagged up some suspicious expenditures.
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.
flag down
Signal to stop, as in The police were flagging down all cars. This expression uses the verb flag in the sense of "catch the attention of, as by waving a flag," a usage dating from the mid-1800s; down was added in the first half of the 1900s.
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.